Final answer:
Spinal cord lesions can be associated with spina bifida, which is a birth defect characterized by the protrusion of meninges and neural tissue through the vertebral column. Myelomeningocele, the most severe form of spina bifida, involves the involvement of spinal nerves and presents with severe neurological symptoms.
Step-by-step explanation:
Spinal cord lesions can be associated with different diseases, such as spina bifida. Spina bifida is a birth defect where the neural tube does not completely close, leading to the emergence of meninges and neural tissue through the vertebral column. There are three types of spina bifida: occulta, meningocele, and myelomeningocele. Myelomeningocele is the most severe type, involving the protrusion of the meninges and involvement of the spinal nerves, leading to severe neurological symptoms.